Goodman ACVC8 CA Series AMVC8 CA Series Service And Troubleshooting page 51

TROUBLESHOOTING
Sym ptom s of Abnorm al
Operation
• Furnace fails to operate.
• Integrated control module LED
display provides error code.
• Furnace fails to operate.
• Integrated control module LED
display provides error code.
• Furnace fails to operate.
• Integrated control module LED
display provides error code.
• Furnace fails to operate.
• Integrated control module LED
display provides error
code.
• Furnace operates at
reduced performance or
operates on low stage w hen
high stage is expected.
• Integrated control module LED
display provides error code.
Diagnostic /
Status LED Fault Description
Code s
• Circulator blow er
motor senses
a loss of rotor control.
• Circulator blow er
motor senses high
current.
• Circulator blow er
motor fails to start 10
consecutive times.
• Circulator blow er
motor shuts dow n for
over or under voltage
condition.
Circulator blow er
•
motor shuts dow n
due to over
temperature condition
on pow er module.
Circulator blow er
•
motor does not have
enough information to
operate properly.
Motor fails to start 40
consecutive times.
Airflow is low er than
•
demanded.
Possible Causes
• Abnormal motor loading, • Check filters, filter grills/registers,
sudden change in speed or duct system, and furnace air
torque, sudden blockage of inlet/outlet for blockages.
furnace air inlet/outlet
• Obstruction in circular • Check circular blow er for
blow housing. obstructions. Remove and
• Seized circular blow er repair/replace w heel/motor if
motor bearings necessary
• Failed circular blow er
motor.
• High AC line voltage to • Check pow er to furnace. Verify
furnace. line voltage to furnace is w ithin the
• Low AC line voltace to range specified on the furnace
furnace. rating plate. See "III. Product
• High ambient temperatures. description" and IV Location
Requirements and Considerations"
furnace installation requirements.
• Error w ith integrated • Check integrated control module.
control module. Motor has a Verify control is populated w ith
rotor condition. correct shared data set. See data
errors above for details. Check for
locked rotor condition ( see error
code above for details).
• Blocked filters. • Check filters for blockage. Clean
• Restrictive ductw ork. filters or remove obstruction.
• Undersized ductw ork. • Check ductw ork for blockage.
Remove obstruction. Verify all
registers are fully open.
• Verify ductw ork is appropriately
sized for system. Resize/replace
ductw ork if necessary.
Corrective Actions
• Turn pow er OFF prior to
repair
• Turn pow er OFF prior to
repair.
• Replace motor w ith correct
replacement part.
• Replace w heel w ith correct
replacement part.
• Turn pow er OFF prior to
repair.
• Replace motor w ith correct
replacement part.
• Use memory card for the
specifc model.
• Turn pow er off prior to
repair.
• Turn pow er OFF prior to
repair.
Notes & Cautions
51